US3572244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater firing device
Assignee: United States Department of the Navy
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Filing: 1967-07-20
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Granted: 1971-03-23
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Expires: 1987-07-20
Abstract
Abstract A MINIATURE UNDERWATER FIRING DEVICE WHICH CAN BE CARRIED BY A SWIMMER AND BE SET OFF BY REMOTE ACOUSTIC CODED SIGNALS. A RECEIVER CIRCUIT COMPRISING A HYDROPHONE, AMPLIFIERS, A BAND PASS FILTER, PARALLEL CONNECTED NARROW BAND CODE FILTERS, LOGIC CIRCUITRY AND AN ACOUSTIC RELAY CONNECTED IN THE SIGNAL PATH.
Inventors
- 👤 Bruce D Garber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:21
CPC Classifications
G; G08; G08C; G08C23/00; G08C23/02; F; F42; F42B; F42B22/00; F42B22/04; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |